Mold for use in building walls, making blocks, slabs, tiles, or briquettes



B. SCRUBY AND. G. K. HARKNESS. MOLD FOR USE IN BUILDING WALLS, MAKINGBLOCkS, SLABS, TILES, 0R BRIQUE TTES.

APPLICATION FILED APR-6.1920.

Patented July 18, 1922.

3 SHEETSSHEET I.

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B. SCRUBY AND G. K. HARKNESS. MOLD FOR USE IN BUILDING WALLS, MAKINGBLOCKS, SLABS, TILES, 0R BRIQUETTESi APPLICATION FILED APR. 6. I920.

Patented. July 18, 1922;.

LQQSAISL 3 SHEETS-SHEET '2.

Bad

B. SCRUBY AND G K. HARKNESS.

MOLD FOR USE IN BUILDING WALLS,- MAKING BLOCKS, SLABS, TILES, 0RBRIQUETTES.

APPUCATION FILED APR 6, 1920.

11, 423 416 1 Patented; July 18, 1922.

s SHEET SSHEET 3.

f in BASIL SCRUBY AND GEORGE KETTELVVELL HARKNESS, 0F HARLOW", ENGLAND.

rironn non use IN nonznrne wants, Maxine spoons, snans, TILES,OBBRIQUETTES fl,d23,dtii.

Specification of Letters Patent. Pat-g f d J l 118 jiggg Applicationfiled April 6, 1920. Serial No. 371,605.

To all to 7mm it may concern Be it known that we, BAsrL SGRUBY andGnonon Kn'rrnLwnLr. HARKNnss, both subjects oi the King ofGreat'Britain, both residing in Harlow, England, have jointly inventedcertain new and useful Improvements in or Relating to Molds for Use inBuilding Walls, Making Blocks, Slabs, Tiles, or Briquettes, of which thefollowing is a specification.

- This invention relates to bottomless molds tor moulding concrete orother plastic materials in building walls in situ contiguously sectionby section and course by course or in making separate blocks, slabs,tiles and the like, the molds being of the kind that comprise each twoend. members and two side mold plates, and means whereby the side platescan be moved indirections away from or towards the central longitudinalplane of the mold, withoutchange of their upright or moulding position,for the purpose ott expanding or of closing the mold and so that oncompletion of a moulding operation an operator can. after the'sideplates have been thus withdrawn from engagement with the mouldedmaterial, readi- 1y lift the mold and leave the sides of the mouldedmaterial or a moulder block tree.

The invention consists in an improved form of theabove type otmold ashereinafter described with reference to the accompanying drawings.

In the improved mold the two side mold plates are so arranged that whenthey are operated to expand the mold they have a combined upward andoutward movement and when they are shifted for the purpose of closingthe mold they hauea combined inward and downward movement.

The improved mold comprises a frame, consisting of two end members heldapart by rigid connecting pieces, the two side mold plates being mountedon or hinged. to the said frame.

The end members of the frame are the end members of the mold and theymay be so formed that themold has either two closedor two open ends, oris closed at one end and open at the other. Stops, linings, partitions,or cores of any suitable known description may, when desired, be placedin the mold to produce any required design of block. i

The invention will be further described with reference to theaccompanying drawbe opened or expanded.

|ngs, in which Fig. l is a perspective View of oneitorm and constructionof the improved mold, one end thereof being closed and the other open;Fig. 2 is a cross section ot'the mold in Fig. 1 looking in the directiono'f the closed end, thefsides being in the normal or closed. position.Fig. 3 is a section looking in the direction of the open end .oi themold, the sides being in the expanded or open position. Fig. 4 is a planof .amold with two closed ends, a liner or plate for forming a key beingarranged in the mold at each end. Fig. 5 is a plan view showingamoditied form of side members, said members being shown in closedposition.

In the drawings (t represents an end member Ofii'tllB outer frame havinga form or shape adapted to close in an end of a mold, and 2') indicatesan end member which is adapted to leaveone end of a mold open. The sidemold plates aredenoted by c. In constructing the improved mold two endmembersare placed at any desired distance apart and are held rigidly inposition by means of suitable rigid connections, such as the bars awhich are shown secured to the end members a or o, by pairs of nuts 6.

The side plates 0 are mounted or supported on the frame in anyconvenient manner, but so, that they can be made to approach or recedefrom one another according as the mold is to be closed laterally or Inthe mold illus trated in Figs. 1 to 3, the side plates 0 are hinged tothe connecting member (Z by means of wire'rod pieces f which aresupported in eyes 9 provided in brackets or lugs g on the side plates 0,with their cranked ends 7" embracing the members (Z.

The lugs g arearranged' at such heights that when the sides of the moldare in the normal, closed or moulding position, the axis of each of thewire rods f will be substantially level or deadcentral with the axis ofthe adjacent member (Z. So long as the said axes occupy these positions,and the terminal portions of the wire rods f do not move away from thedead centre lines, such as line i Fig. 2, the sides will remain lockedand immovable under the action of any direct pressure transmittedthereto by material deposited in the mold. By raising the sides so thatthe rods move away from the dead centre, the sides can be retracted orexpanded so far as the connect ng member block that has been formed inthe mold free The sides a are provided with means to prevent themniovingbelow the dead centre; such means may consist of stops j attached to thesides, and adapted to engage with the member d when the portions f liein the dead centre lines. i

For raising or manipulating the sides 0, handles it are fixed thereto.These handles may he so positioned that when the side plates 0 are inthe normal or operative position thehandles will rest upon the upperineniberscl and thereby serve to prevent the sides from passing belowthe dead centres." In such case the stops 9' referred to above inayfbedispensed with. The top edges of the sides 0 when these are in normal oroperative position, would be level with the top edge of the closed endmember or ends a of the mold. The bottom edges oi the sides 0 may belevel with the bottom edges of the end member a or they may, as iscustomary, extend lower down, as shown at c in Figs. 1., 2 and 3, sothat when the mold is used to mould a block of material placed on thetop of a block or layer already formed, such extended portions willengage with or embrace the sides of the previously termed. block orlayer, it it be of the same width. i ln'this way the side surtacesotthesupei-posed hloclcs or layers will be thus Kept sions plumb. 1 I M Toguide the side ineinbers o in the r mo sent when air-open end member 7)is usediras in l, angle pieces Z may beattachod. by 011601 their limbsto the side member. and in such a manner that their other liinliwillhear upon. theinner face of theeiul ineinbe ll 'desii'ed, sides 0 niayi,as shown in Fig.

he made longer than is required for torinu v k I; iii the block or porton of wall of a given h} ;h. in order that the side extensions may incases when the block to be' mould'ed is to he placed end, on the blockor part already i orined. embrace the sides of the latlot. In this casethe mold would have one closedeiid a and one open end member 7) Vlicatedin Fig. in which the sides a shown as having longitudinal exten-In order that the said already 'lforineil block or part may not be damagon it. the u'eiglitht the meinl'ie'r'niay be distributed over a largerarea on that block or part, by providing the said end, member with. aweight-disti'ibuting plate iii.

It it be desired to form blocks which,

ahen'placed end-on in .a row, will be keyed together, loose keyplat'e'or lining maybe placed at each end of a mold as shown in l' ig.l. The key plates m may have the term slidwn in l ig. 4, so that blockswith aproeiid block is in positionthe lifted placed in position to moldanother portion jection at one end and a recess at the other can bemoulded. T he linings may, however,

he of other shapes for keying and other purposes. Partitions maybeplaced inside the mold to form halt, quarter or other sized blocks.The end member a of a moldmay,

instead of being flat, be joggled or otherraised. whereupon the crankedends 7 of the rods f are lifted out of the dead centre lines so tliatthesides can he then inoved outnaidly. turning upon their hinges. As soonas the sides are clear of the sides of the block or article, the'inoldcan he lifted bodily upwards. T he end key'or otherliuing plates. i any"be used, can then be removed or pushed away, and the bloclt leftexposed to set hard and dry. I It the sides 0 0t theinold used for"forming separate'bloclzs are provided with the depending extensions '0above mentioned, sand or the lilre can be placed upon the flat surfaceon whichthe blocks are to be m oulded, thesaid extensions being pressedinto the sand until the bottom edges of itsends a are flush with thesurface oi the layer of sandqj i-ilternatively. a wooden or other solepiece. of a widthto fit between the two'feX tensions of" the mold whenthe sides (2 are in normal position, may housed.

v lnbuilding a wall a mold with one closed end a and oneopen endDisfused'. The commencement or end portion oi every layer to he mouldedto form the wall may consist Oi a separately' moulded block. When such 7open Z) o'li'the mold with its sides in norinalposition is placed end onto it and .iii a manner to overlap the block more or less; "Concreteorothei' material is then placed in the mold, being thereby moulded onto the end of the block. Thi s done. tlie'inold' is expanded and oil thenewly moulded portionand end-on to the last said portion. In this wayportions areadded'in succession along the length of the wall untilthelayer'i's com plete- The terminal portion'ot the 'layer may consistof it separately formed block similar to the commencing poi-tion ot thelayer; When the layer is sufficiently dry or hard tobear the weight ofthesuperposed layer, this supergosed layer can be proceeded with in thesame mannen The improved moldcan be used in forming lintels or otherparts of a wall or in moulding blocks or joists that are reinforced withlongitudinally directed rods. In such cas s the end or ends a would beprovided vith holes through which the rods would pass. ll here the rodsare continuous, entering the open end 6 of a mold and traversing theholes in the closed end a, the mold can he slid along the rods intosuccessive positions to form a continuous lintel or other reinforcedpart.

llaving thus described the nature of the said 'ivention and the bestmeans we know of carrying the same into practical effect, we claim 1. iibottomless mold of the class described, comprising two end memberssuitably spaced apart, rigid longitudinally disposed pieces connected attheir opposite ends directly to said end members and holdingsaid endmembers relatively immovable,-

a pair of movable side mold plates, and connecting arms pivoted to themovable side plates and to the rigid connecting pieces, said movableside plates being adapted to swing upward and outward about the axes ofthe rigid connecting pieces from an operative position into an inactiveposition.

Q. A bottomlessmold of the class described, comprising an open. archedend member and a closed end member suitably spaced apart, rigidlongitudinally disposed pieces connected at their opposite ends directlyto said end members and holding said end mem ers relatively immovable, apair of side mold plates, and connecting arms pivoted to the movableside plates and to the rigid connecting pieces, said movable side platesbeing adapted to swing upward and outward about the axes of the rigidconnecting pieces from an operative position to an inactive position.

A bottomless mold of the class described, comprising a pair of endmembers suitably spaced apart, longitudinally disposed pieces rigidlyconnecting the two end members and adapted to hold them relativelyimmovable, a pair of side mold plates,

connecting arms pivoted to the movable side plates and to the rigidconnecting pieces,

said movable side plates being adapted to swing upward and outward aboutthe axes of the rigid connecting pieces from an, operative position toan inactive position, and

means carried by the side plates and adapted when the plates are inoperative position to engage the rigid connecting pieces and limit thedescent o'l said connecting arms below said axes, as and for the purposedescribed.

eL'A bottomless mold of the class described, comprising a pair of endmembers suitably spaced apart, longitudinally disposed pieces rigidlyconnecting the two end members and adapted to hold them relativelyimmovable, a pair of movable side mold plates, connecting arms pivotedtothe movable side plates and to the rigid connecting pieces, the saidmovable side plates being adapted to swing upward and outwardly aboutthe axes of the rigid connecting pieces from an operative position to aninactive position, and handle parts carried by the side plates forswinging the latter about said axes, said handle parts adapted, when theplates are in operative position, to engage the rigid connecting piecesand limit the descent of. said connecting arms below said axes, as andfor the purpose described.

5. A bottomless mold of the class described, comprising an open archedend member and a closed end member suitably spaced apart, longitudinallydisposed pieces rigidly connecting the two end members and adapted tohold them relatively immovable, a pair of movable longitudinallyarranged side mold plates extending from one end member to the other andhaving parts 6X- tending through and beyond the open end member, andconnecting arms pivoted to the movable side plates and to the rigidconnecting pieces and adapted to swing upward and outwardly about theaxes of the rigid connecting pieces from an operative position into aninactive position.

In testimony whereof we have signed our names to this specification.

BASIL SCRUBY. G. KETTELWVELL HARKNESS.

